Clinical Results of Surgery for Thoracic Myelopathy Caused by Ossification of the Posterior Longitudinal Ligament: Operative Indication of Posterior Decompression With Instrumented Fusion

医学 外科 椎板成形术 椎板切除术 减压 脊髓病 骨科手术 后纵韧带 后纵韧带骨化 回顾性队列研究 脊柱融合术 骨化 脊柱减压 脊髓压迫 后凸 脊髓 精神科
作者
Masashi Yamazaki,Manabu Mochizuki,Yoshikazu Ikeda,Tomonori Sodeyama,Akihiko Okawa,Masao Koda,Hideshige Moriya
出处
期刊:Spine [Ovid Technologies (Wolters Kluwer)]
卷期号:31 (13): 1452-1460 被引量:113
标识
DOI:10.1097/01.brs.0000220834.22131.fb
摘要

This retrospective study was conducted to investigate the clinical outcomes of several surgical procedures for thoracic myelopathy caused by ossification of the posterior longitudinal ligament (OPLL).To evaluate the effect of myelopathy treatment and safety of posterior decompression with instrumented fusion.Many different surgical procedures have been used for the treatment of thoracic OPLL. However, the possibility of postoperative paraplegia remains a major risk, and consistent protocols and procedures for surgical treatment of thoracic OPLL have also not been established.A total of 51 patients who underwent surgery for thoracic OPLL were classified into 3 groups: (1) posterior decompression group (18 patients), which included 12 who underwent laminectomy and 6 who underwent cervicothoracic laminoplasty; (2) OPLL extirpation group (16 patients), which included 4 who underwent anterior decompression through thoracotomy and 12 who underwent anterior decompression through the posterior approach; and (3) posterior decompression and fusion group (17 patients), all of whom underwent laminectomy with posterior instrumented fusion. In each group, the Japanese Orthopedic Association score was used to evaluate thoracic myelopathy, and the recovery rate calculated 1 year after surgery and at final examination.Mean recovery rate at final follow-up was 41.9% in the posterior decompression group, 62.1% in the OPLL extirpation group, and 59.3% in the posterior decompression and fusion group. Postoperative paralysis occurred in 3 patients in the posterior decompression group and in 3 in the OPLL extirpation group. In the OPLL extirpation group, leakage of cerebrospinal fluid occurred in 8 patients and hydrothorax in 2. Late neurologic deterioration occurred in 7 patients in the posterior decompression group. There were no cases of postoperative paralysis or late neurologic deterioration in the posterior decompression and fusion group.A considerable degree of neurologic recovery was obtained by posterior decompression with instrumented fusion, despite the anterior impingement of the spinal cord by OPLL remaining. In addition, the rate of postoperative complications was extremely low with this procedure. We recommend that 1-stage posterior decompression and instrumented fusion be selected for patients in whom the spinal cord is severely damaged before surgery and/or when extirpation of OPLL is associated with increased risk.
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